ArticleSensors (Basel, Switzerland)2021
Thermal and Geometric Error Compensation Approach for an Optical Linear Encoder.
Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Design and Experimental Validation of a Round Inductosyn-Based Angular Measurement System.Micromachines · 2025Article
- Modeling and Prediction of Thermal Deformation Errors in Fiber Optic Gyroscopes Based on the TD-Model.Sensors (Basel, Switzerland) · 2023Article
- A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder.Sensors (Basel, Switzerland) · 2023Article
- Methods for Reducing Subdivision Error within One Signal Period of Single-Field Scanning Absolute Linear Encoder.Sensors (Basel, Switzerland) · 2023Article
- Latest Trends in the Improvement of Measuring Methods and Equipment in the Area of NDT.Sensors (Basel, Switzerland) · 2021Article
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Authors and funding
3 authors.
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Abstract
Linear displacement measuring systems, like optical encoders, are widely used in various precise positioning applications to form a full closed-loop control system. Thus, the performance of the machine and the quality of its technological process are highly dependent on the accuracy of the linear encoder used. Thermoelastic deformation caused by a various thermal sources and the changing ambient temperature are important factors that introduce errors in an encoder reading. This work presents an experimental realization of the real-time geometric and thermal error compensation of the optical linear encoder. The implemented compensation model is based on the approximation of the tested encoder error by a simple parametric function and calculation of a linear nature error component according to an ambient temperature variation. The calculation of a two-dimensional compensation function and the real-time correction of the investigated linear encoder position readings are realized by using a field programmable gate array (FPGA) computing platform. The results of the performed experimental research verified that the final positioning error could be reduced up to 98%.
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